My jaw hit the floor tonight watching a 60 Minutes segment on the emerging neuroscience of brain-only computer interfaces. In the clip (included in full below), see how a completely paralyzed man, who could otherwise only communicate by moving his eyes, uses his mind to type out thoughts on a computer screen. Of course, the process is very slow going—each letter takes up to 20 seconds to type. Reporter Scott Pelley donned the controller skull cap, and watched a screen of flashing l